[niceandclean]

I have been asked to clean an old peoples home tiled roof. After looking into it, as this will be the first time we have done this, i can find a detergent based cleaner to clean the roof, (which is majorly covererd in moss) but is there a sealer or something to stop the moss growing back? As there is a company that says they spray some solution on the roof to stop it, but i thought you could never stop moss growing on anything? Any help and advice would be greatly appreciated.

[lynngc]

 it would help us on the forum if you put more of your details on your profile.

the chemical you would need is copper sulphate or copper ions.

the sulphate has a harmful warning label affixed to it.
as you have not done this sort of work before, i would suggest you google;  moss, roofs and sulphate.

phone around the specialist companys for a bit of advice.

lynn